细胞毒性四酸衍生物是由植物类型III聚基化合成酶产生的
Toshiyuki Wakimoto1, Takahiro Mori, Hiroyuki Morita
1Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|March 12, 2011
概括
研究人员使用植物特异性的沙合成酶 (BAS) 设计了新的四酸衍生物. 一种衍生物显示出中度的抗增殖活性,扩大了这种多功能酶的潜力.
科学领域:
- 生物化学 生物化学
- 自然产品的合成自然产品的合成
- 酶学 是一种酶学.
背景情况:
- 酸 (2,4-pyrrolidinedione) 衍生物具有多种生物活性,包括抗菌,抗病毒和抗氧化特性.
- 这些化合物通常由复杂的I型多基基合成酶/非核糖体合成酶 (PKS/NRPS) 混合系统合成.
- 植物特异性III型PKS,如来自Rheum palmatum的甲合成酶 (BAS),提供更简单的催化机制和广泛的基质特异性.
研究的目的:
- 研究Rheum palmatum BAS在合成新型四酸衍生物中的潜力.
- 探索使用化学合成的氨基-CoA二以作为BAS的基质.
- 为了评估新合成的四酸衍生物的生物活性.
主要方法:
- 使用了来自Rheum palmatum的沙合成酶 (BAS).
- 采用化学合成的L-和D-aminoacyl-CoA二 Ester作为基质.
- 与马洛尼尔-CoA进行的凝结反应.
- 评估合成化合物对小鼠白血病P388细胞的抗增殖活性.
主要成果:
- 风湿棕树BAS有效地生产了一系列非天然的四酸衍生物.
- 该酶通过利用各种氨基-CoA二 Ester 证明了它的多功能性.
- 一种来自D-phenylalanoyl-CoA的新型四酸二聚体D-5表现出中度的抗增殖活性.
结论:
- 来自植物的III型PKS,特别是BAS,可以被设计成合成新型四酸衍生物.
- 这种方法扩大了四酸化合物的化学多样性,超出了天然产品路径.
- 观察到的抗增殖活性表明,BAS-engineered tetramic acid的潜在治疗应用.
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